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sdas [7]
3 years ago
12

Plz help im begging i got a F

Mathematics
1 answer:
Elena L [17]3 years ago
8 0

Answer: 4,9,2,8

Step-by-step explanation:

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Х = 2y — 4<br> (3х – бу = -12
horsena [70]

Answer:

0

Step-by-step explanation:

Substitute the value of x to the 2nd equation

3(2y-4)-6y=-12

6y-12-6y=-12

0=0

7 0
3 years ago
Find the shaded area of the circle below.
Crazy boy [7]

Answer:

area of the circle,

radius=10m

diameter=20m

πr²

3.14×100

314m²

area of the triangle=1/2×20×10

=100

area of the shaded area=314-100=214 m²

the answer is option <em>H</em>

6 0
3 years ago
4. Celia is making biscuits. Her recipe calls for 1/3 cup of flour, but
AveGali [126]

Answer:

I think it is 5/6

Step-by-step explanation:

She should do 5/6 of the way because 1/3x1/2=5/6

3 0
3 years ago
Read 2 more answers
a stadium floor that is in the shape of a circle has a diameter with length of 210 yards. which of these measurements is closest
Len [333]
<span>The stadium floor has a diameter of 210 yards, therefore the radius would be 105 yards

The Area of a circle is Pi times radius^2

A = Pi x 105yd^2
A = Pi x 11025yd
A = </span>34636.06 yd<span>

</span>
5 0
3 years ago
a study of the effects of exercis used rats bred to have high or low capacity for exercise. The 8 high capacity rats had mean bl
zavuch27 [327]

Answer:

t=-2.86

Step-by-step explanation:

From the question we are told that:

Sample 1 n_1=8

Sample 1 mean blood pressure \=x_1=89mmHg

Sample 1 variance \sigma_1=81

Sample 2 n_2=8

Sample 2 mean blood pressure \=x_2=105mmHg

Sample 2 variance \sigma_2=169

Generally the equation for the test of statistic is mathematically given by

t=\frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_2}{n_1}+\frac{\sigma_2}{n_2} } }

t=\frac{89-105}{\sqrt{\frac{81}{8}+\frac{169}{8} } }

t=-2.86

therefore the samples test for comparing the two population means

t=-2.86

3 0
3 years ago
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